Scaffold end frame



Jan. 15, 1952 R, H DUNN scAFFoLD END FRAME 3 Sheets-Sheet l Filed Jan.17, 1947 i x o f b 1905605 H. DUN/V Mm M/m Grammy Jan. 15, 1952 R- HDUNN 2,582,625

SCAFF'OLD END FRAME Filed Jan. 17, 1947 3 Sheets-Sheet 2 JMW Q Roscos H.DUNN Jan. l5, 1952 R DUNN 4 2,582,625

scAFFoLD END FRAME Patented Jan. l5, 1 952 v 2,582,625 sefAFFoLDEND'iFltAME RoscoerH."-Dunn,z Bloomington, Ill; 'ljllicaflf January L17,1947; SlilfNO. "722;7 04

Y il; 'This' "in'vention'*relatesfto lscafi-'old's,L and imor'e'particularlyl to lthe= construction of fthe upright parts'dandthemembers'adaptedfto brace/these' parts together.

lIt isan object of 5the present ffinve'ntion'v l:to provide ascaffoldin'gffor '-usefb'y"paintersfand othersffwh'ich'fcan beconsti-"ucted-as--the work" upon the.' 4building progresses upwardly#and wherein the elevationof'ftheplatfcrnr-at i diffrend-times can beeffected-with minimumf-eiort and by -'xtures which' can be1ea'sii'ra-n'd` quickly applied. 1

YIt is another objectoflthe-present invention toV provide inscaffoldingupri-giit structures v`located at the respective :corners ofthescaffldingi' which compriseftwo laterally spaced, vertically extend#ing pieces so arranged as v#te provide an'spaee through ywhich endibi-*aces can 'be slid 'andJad-l justed to a: position`wherebythey'"will "support the platform, when1the--platfo`rmh'asbeenxreleased from the e1eVat-ing=1'mechanism.

standing-'of the invention, reference may Joe *had tothe followingdetailed Adescription taken-'Jiri'y connectionlwiththeaccompanyingv'drawings in which:

Figure 1 is -aperspectiveiviewof-f`a portion-of-a scaffold showing aplatform elevated andf retained in place vby horizontally:extended-supports '-be tween multiple piece' upright structures* andshowing; the longitudinally extending braces fco'n' nected between :theyhorizontally L extending fs-up- Figure 2i's Van endlelevationallviewof.the-scafi foldingishown in Figure-1.

Figure 3 is Van enlarged cross-sectional rvie'w taken on line A3*-3 SofFigure 1,. and? looking-in fthe direction of the arrows thereof, andlooking `upon cneof the .pin fasteners.

Figure @-4 f isi .i an f enlarged fcross-'sec'tional v"viewtakenOndine-4 4 offFigure 1,fandlooking'vbrcadi sidefupon' one-of thepinfa-steners.

Figure 5 is a-1cross-sec'tionalf View Staken-"on line 5`5` v'of "Figure1, and looking)y in the direction 1 of thearrows thereo'fland uponone-oftheklongitudi nelly-extendingbracing members. y

Figure I6 is anelevtional 'view :looking-upon' the foot portionfof.oneio'f thefvertically.:ext-end'r ing structures:

Figure .'Tis anferilar'ged fragmentaryviewilooki ing upon the edge 0fone of the platesf'iservin'g.

54 oiaimsi (chiama-2i.,

vertical-ly@ extending 'structure' intermedi'atedts length.

FigureFQ is faffr'agmentary .front elevatinalview of aconstructionshowingrnultiplefplatfcrms with `one platform .beingf raisedby `the other, and

slfi'ow'fing:y bracing=-rods` adapted to be ih'ook'edf bell` tween;individual vertically extending structures; to tie' them togetheri atidierent -heiglit's f along the scaffold. v l

Figure V10""'is a fragmentary view-flocking in plan upon oneJ ofthe`cable-hoisting devices.v

Figure V11 is a vfragmeritary view of fa modied form'of `-`foot supportvfo`r" the Vlower zendof one of the-vertically'extendingstructures?'Figure-"12 is al A'fragmentary view showing'one' ends of-the-vertically'exten-ding pieces together when extending the h'eighifofthe scaffold.

Figure i3 is a lplan view, partlyfinsection, of a modicationutilizingsingle post uprights.'

Figure '14 is arr'agmentarylelevation'of a"modi 'caton of the extendingmembers using 'a' hinged connection instead'of plates; l Figure 15 is a.fragmentary elevationisimilar to .Figure 14,' showingv one ofthehingemembers partly unsecured'for folding of `t`he extension members whenthey are being assembled ior dis-- assembled. 4 Y?.

Figure 16 is a side elevation..of.the hoisting de. vice showing theratchetretai-ner..

Referring now .particularly .to Figures yl and.2,. 21v represents one.of the'verticallyextending structuresserving. as -the verticalsupportfor the scaffold. There will be several ofithesevertically extendingystructuresf depending upon-` theb size.` of thev scaffold to-fbeconstructed.- Each offftheseverticallyextending .structures f- 2 i-comprises :twouprights 1 foripeces -r22 vand A123 f which' are :heldlaterally-spaced fromfone'another .byspacers-24 located at l, different:elevations .throughcutv.: the

height f of.h i. each structure. These spacers -2 i are connected bybolts 25 extending through the spacers ,fand l:tl'urougl'r the r4pieces2 2 f andl 23 rtouretain r.the Verticalfilspacers f24 at the.,properaelevwtion. .Therelaref two of these'spacers :2 esandftherearetwobolts 25.1for respectively retaining ,thetwo' in -th'e 'ends' ofhorizontally extending"supports` and brace :membersfS I .i .The :brace:membersii are .f extendedv betweenzxtwo'. verticall supporting plates32connected to the ends of the brace mem-l bers 3| by screws 33 andclamped against the side edges of the'pieces 22 and 23, whereby toprevent the separation of the vertical structures 2| from the braces 3|and at times to permit the-bracesv to be located above the spacers 24with the fastener projection 21 out of the opening 26. These plates 32will retain the bracev 3| temporarily-V during assembly of the deviceuntil such time rod 56 is tightened, it will serve as a brace for theouter end of the member 52.

At times when it is desired to extend the height of the verticalstructures 2|, there may be connected to the side pieces in place of thecrossbars.

' of the scaiold.

In Figure 12, there is shown a different form of construction forextending the height of the vertically extending structures 2|. In thisinstance, the side plates, as indicated at 6| and 62,

x are connected to the side edges of the pieces 22 as spacers 24 havebeen located between the pieces 22 and 23. Platform boards 34 arecarried upon the brace members, 3| and as the brace members areelevated, the platform boards 34 will likewise be brought up upwardly.The upper ends of the vertical structures 2| can be tied together bymembers 35 and 36 connected to the opposite faces of the verticalstructures 2| by bolts 31. Between these tie members 35 and 36 can belocated a pulley device 33 over which a hoisting cable 39 is extendedfor connection with a cable hoist device 4|. The opposite end of thecable is extended through the platform boards 34 for connection with thelaterally extending supports or braces 3|. The workmen will stand uponthe platform boards 34 and turn a crank 42 to elevate themselves to thedesired level, the clamping plates 32i subadjacent the platform beingrst loosened. Thereafter the clamping plates 32 can be tightened uponthe members 43 having angle pieces 44 extending over the ends of thesame. These members 43 are dropped down over the braces 3| so that theangle members 44 will extend thereover. A vertically extending portion45 willl engage the side of the brace 3| so as to retain the brace 3|and the adjacent vertically extending structure 2| against longitudinaldisplacement.

Referring now to Figure 6, there is shown one form of foot support forthe vertically extending structures 2|. This foot support may comprise aseries of transversely extending members 46 vertically spaced from oneanother and extended across the edges of the pieces 22 and 23 forconnection with vertically converging pieces 48 and 48 bearing upon thesides of the pieces 22 and 23 and'at their lower ends connected to abottom transverse piece 49. The foot support may alsol contain shortvertically extending pieces 5| extending along vthe sides vof the sidepieces 22 and v Referring now to Figure' 1l, there is shown a modifiedform of foot construction.' In the arrangement shown in this gure,there'is provided a laterally extending ground-contacting projection 52which is connected at its inner end by means of bolts 53 to the lowerendof the vertically extending structure 2|. On the outer end of themember 52 are a plurality of openings 54 adapted to receive a pinv 55for connecting a tie rod 56 thereto. This `tie rod 56 has a turnbuckle51 for tightening the rod between the member 52 and the structure .2|...When the tier and 23, the crossbars 35 and 36 being removed. Bolts 63extend between these plates 6| and 62, and when their nuts 64 arevtightened thereon, the plates 6| and 62 will be brought into clampingengagement with the edges of the pieces 22 and 23.

Referring now particularly to Figure 9, there is shown a constructionwhere there are more than two vertically extending supports 2| spacedfrom one another. These supports may carry a top platform 34 and a lowerplatform 66. The lower platform can be supported from the upper platformby means of rods 61 having hooked foot ends 68 thereon. The platform 34may have supports 69 connected to its bottom face. Over these supportsthe hooked ends 68 of the rods 61 may be extended. The rods 61 willextend downwardly through the lower platform 66 to be hooked about asupport 1| for the lower platform. By tying these two platformstogether, they may be vertically adjusted at the same time.

Likewise, rods can be used for tying the vertically extending structures2| against lateral separation. For this purpose there is provided a hook12 adapted to be connected upon a ring 13 on one of the verticallyextending structures 2| and in such a manner that it can Ibe swungdownwardly and fitted into a staple 14 on another structure 2|.

The longitudinally extending members for the structure shown in Figure 9will extend along more than two of the vertically extending structures2| and may be connected to the structures in the manner shown in Figure8 by a U-bolt 15 extended about one of the pieces of the verticallyextending structure 2| and secured by nuts 16 engaged with one of theside faces of the longitudinally extending braces. The brace isindicated at 11.

In Figure 13 is shown a modification of the uprights, wherein a singlepost 2 la replaces the pair of vertically members 22 and 23, and a pairof brace members 3|a and 3|b replace the singleV brace members 3| ofFigure 1. 'Ihe brace members are connected to the post 2 la by boltswhich are removed when the platform 34 is to be raised.r

In Figure 14 is shown va modification of the extending'members 2|a whichare connected together by means of a pair of hinges 58a and 58h in lieuof extension plates 58 in Figure 7, for convenience and safety inassembling the vertical supports.

One-half of either of these hinges may be unsecured, as shown at 58h inFigure 15, and one of the-vertical members 2|a folded in eitherdirection upon the other depending upon which hinge portion isunfastened.

In Figure 16 is shown the cable hoist device generally designated 4|,and comprising a cable drum 39a rotatably supported in a shaft-bearingframe 41a and provided on each end thereof with a ratchet Mb and pawlllc adapted to securely lock the drum at both ends when the platform 34is elevated to suitable position.

Having now described my invention, I claim:

1. A scaffold end frame comprising a pair of identical verticallyextending pieces, each including a pair of cooperative pieces, spacerstransversely disposed between the pieces of each pair for retaining thepieces in spaced relation, plat form support members disposedtransversely between the pair of pieces and having their opposing endspositioned between the pieces of each pair, clamping plates detachablyaffixed transversely to the opposing ends of the members and clampinglyengageable with the outer edges of the pieces of each pair for ailxingthe members between the pieces, said spacers between the pieces of eachpair being arranged in pairs and each pair of spacers being in spacedrelation, fasteners carried by the members and each fastener having adepending projection received between the spacers of each pair.

2. A scaffold end frame comprising a pair of identical verticallyextending structures, each including a pair of cooperative pieces,spacers transversely disposed between the pieces of each pair forretaining the pieces in spaced relation, platform support membersdisposed transversely between the pair of structures and having theiropposing ends positioned between the pieces of each pair, clampingplates detachably aiiixed transversely to the opposing ends of themembers and clampingly engageable with the outer edges of the pieces ofeach pair for aiiixing the members .between the structures, said spacersbetween the pieces of each pair being arranged in pairs and each pair ofspacers being in spaced relation, fasteners carried by the members andeach fastener having a depending projection received between the spacersof each pair, and each of said members having Yvertical openings formedadjacent to its opposing ends and upstanding projections on thefasteners received in said openings.

3. A scaffold end frame comprising a pair of identical verticallyextending structures, each structure including a, pair of spaced pieces.spacers transversely disposed between the pieces of each pair forretaining the pieces in spaced relation, platform support membersdisposed transversely between the pair of structures and having theiropposing ends positioned between the pieces of each pair, clampingplates detachably affixed transversely to the opposing ends of themembers and clampingly engageable with the outer edges of the pieces ofeach pair for aiixing the members between the structures, said spacersbetween the pieces of each pair being arranged in pairs and each pair ofspacers being in spaced relation, fasteners carried by the members andhaving means cooperatively engageable with the spacers of each pair andwith the ends of the platform support members.

4. A scaffold end frame comprising a pair of identical verticallyextending structures, each structure including a pair of spaced pieces,spacers transversely disposed between the pieces of each pair forretaining the pieces in spaced relation, platform support membersdisposed transversely between the pair of structures and having theiropposing ends positioned between the pieces of each pair, clampingplates detachably affixed transversely to the opposingends of themembers and operatively engageable with the outer edges of the pieces ofeach pair for aixing the members between the structures, said spacersbetween the pieces of each pair being arranged in pairs and each pair ofspacers being in spaced relation, fasteners carried by the members andeach fastener having a depending projection received between the spacersof each pair.

ROSCOE H. DUNN.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 295,592 Subers Mar. 25, 1884378,102 Moss i Feb. 21, 1888 428,769 Dodge May 27, 1890 588,982 GrayAug. 3l, 1897 744,194 Harrison Nov. 17, 1903 863,708 Flatley Aug. 20,1907 964,233 Gilliland July 12, 1910 1,168,868 Ericsson June 18, 19162,089,871 Adams Aug. 10, 1937 2,289,141 Oertle July 7. 1942

